Drilling machine



Jan. 26 1926.

P. MEYER DRILLING MACHINE Filed July .1o. 1924 2 sheets-sheet 1 /VVENTOR.

ATTORNEY Patented Jan. 26, 1926.

UNITED STATES PETER MEYER, OF NEWARK, NEW JERSEY.

DRILLING MACHINE.

Application filed J'uly 10, 1924. Serial No. 725,137.

To all whom t may concern.'

Be it known that I, PETER MEYER, a citizen of the United States, and resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Drilling Machines, of which the fo-llowing is a specification.

The object of my invention is to provide means to automatically feed to drilling position and to drill articles having non-circular or irregular configurations at one or more parts, my invention being particularly applicable for drilling transversely disposed holes in pins used in pianos for retaining and tuning the strings. Such pins usually have cylindrical portions and tapering square portions near one end with transverse holes drilled through flat-wise surfaces on opposite sides of the pins. In accordance with my invention I provide means to automatically feed such pins, as from a supply hopper, successively to drilling position beneath a drill and to present' such pins inv position with one of the iiat surfaces of the pins in position opposing the drill, regardless of the positions the flat surfaces of the pins may assume when they are delivered from a hopper to be fed toward the drilling position.

My invention also comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.

4Reference is to be had to the accompanying drawings forming apart hereof, where- 1n Fig. 1 is a side elevation of a drilling machine embodying my invention;

Fig. 2 is a perspective view of one of the pins to be drilled;

Fig. 3 is an end view looking from the left hand side of Fig. 1,;

Fig. 4 is a sectional detail;

Fig. 5 is an enlarged detail section on line 5, 5. in Fig. 1; n

6 is a detail section on line 6, 6, in

1g- 3 gig. 7 is a detail on line 7, 7, of Fig. 6, an

Fig. 8 is an enlarged section on line 8, 8, in Fig. 3.

Similar numerals of reference indicate corresponding parts in the several views.

The numeral 1 indicates the main frame of the machinefwhih may be of any suitable construction, and at 2 is a longitudinally movable drill spindle shown provided with a chuck 3 to retain a drill 4 in any well known way. The spindle 2 may be rotated by a pulley 5, belt 6 and drive pulley 7 in a well known way. The spindle 2 is rotatively mounted and is operatively connected to a sleeve S slidable inrbearings 9 supported by the main frame in a well known way to feed the drill to and from the work. Drive pulley 7 is shown carried by a vertical shaft 10 journaled in suitable bearings on the main frame and shown provided with gear 11 in mesh with a gear 12 on drive shaft 13, which may be operated by fast and loose pulleys 14, 15, (Fig. 3), or in any other desired way. rihc shaft 13 is shown provided with a pulley 16 receiving a belt 17 passing over a pulley 18 secured on shaft 19 journaled on the main frame. The shaft 19 is provided with a pinion 2O in mesh with a gear 21 secured on shaft 22 journaled in bearings upon the main frame. By the belts, pulleys and gearings described the shaft 22 is rotated at the desired speed respecting the rotation of spindle 2. The reciprocations of spindle 2 are effected by means of a lever 23 pivoted on the main frame at 24 and provided with a fork at 25 receiving projections 26 on a collar 27 secured in suitable position on sleeve 8 by means of screws 23. The opposite end of lever 23 is pivotally connected with a depending link 29 that is pivotally connected at 30 with an arm 31 journaled on a stud or shaft 32 supported by the main frame. The arm 31 is provided with a proiection or roller 33 cooperative with a cam 34 secured on shaft 2 2, and a spring 35 connected with the main frame at 36 and with link 2.9 at 37 resiliently retains the proiection or roller 33 in cooperation with cam 34, whereby for each complete rotation of said cam' the lever 23 willbe rocked to feed said spindle 2 and the drill i to and from the work.

The pins A to be drilled are shown of the variety having cylindrical bodies or shanks and provided at one end with fiat faces a. shown in outwardly tapering form arranged in rectangular form. although pins having other irregular configurations may be fed and drilled, such as hexagonal and Octagonal shapes, and the like. rl`he pins are fed into a hopper 38 suitably supported on the yIrlain frame, shown having downwardly tapering bottom walls 33, 38b converging to a delivery guideway or passage 39 transversely disposed to receive the lowermost pin A, (Fig. A slidable plate 40 is located upon the wall 33? of the hopper and is guided to be reciprocated along said wallby means of pins or screws 4l pro]ect1ng through slots ft2 into wall 38", which pins are shown connected togetherby a bar t3 that is pivotally connected with a link All. The .linlt la is pivotally connected at its lower end to cranlrarm projecting from a rock shaft L16 journaled in bearings supported by the main frame, which shaft is provided with an arm 1li' shown having a roller a3 cooperative with a cam -19 on shaft 2Q, 3,) whereby as said cam is rotated the slide 40 will be reciprocated to agitate the pins in the hopper to cause them to roll down through the delivery guideway or passage A transverse bar is supported adjacent to the bottom of the hopper and beneath said bar a slidemeniber or plate' 51 is supported to reciprocate. i Said slide member is retained by means of screws entering slots 53 in said member and screwed into barvO, (Figs. l and 5). The member 5l is provided with adepending rack 54. in mesh with a gear secured on shaft 46, whereby as said shaft is rocked the member 5l will be reciprocated. The member 5l is operative with relation to the guideway or passage 39 and is provided with means toreceive the pins A and cause them to be turned in proper position to present one of their flat surfaces beneaththe drill las and when such pin is fed to drilling position from the hopper. A bar 50a adjacent to guideway 39 is suitably spaced above the underlying portion of slide member 5l providing a passageway over the end portion of said member behind the side wall 50h, `(Figsc 5 and 6), for the passage of the pins A to the drilling position@y Plate 50c is secured under passage 39 and-forms the bottom of passageway 56 and guides the rod 66, (Fig. 8). The bar 5()a is provided with-a recess 57 i .which one. or1more movable pin-controlling blocks 58 are located to slide laterally with respect to said pins. The blocks .5S are support-ed upon plate 5l and are provided with depending pins 59 operative in` slots 6.0 in plate 'lrsaidblocks being normally-pushed toward the path of the pins by springs 61. The springs 61 are'shown coiled and located in recesses 6F21. 63 respectively in bar 50 and hleclfs 58. The forward operating surfaces ofthe blocks 58 are beveled and .inclined at 58a, (Figs. 6 and 7), from the pin receiving sidesy of said` blocks toward the opposite sides and preferablv from the lowerito the upper surfaces of said blocks. Ain such a man- .ner that. when a pin A is fed along plate 51 after delivery from guideway 39 toward the blocks 58 the inclined surfaces 58" of said blocks will engage one or -another of the flat surfaces c of the pin to cause the pin in its progress to the drilling position to be rotated in such a manner as to present one of its fiat surfaces upwardly to pass under a drill guide 6% having an aperture 64a for guiding the drill Ll, (Figs. l and 3). The drill guide is shown secured by screws 65 on bar 50. The outer ends of pins A rest upon support Gib spaced below guide 6l and secured to bar 50, (Figs. l, 3 and 8).

En order to feed the pins A successively to drilling positionl provide aA reciprocative rod 66 guided in bearings at 67 on the main frame, (Fig. l), and shown provided with a collar 63 having studs 69 receiving a fork 170 of a rock arm 70 that is secured upon shaft-32,.the lower end of said arm being shown connected with a spring 7l attached to the main frame at T2. An arm 73 secured to shaft 32 is provided with a projection or roller 74 cooperative with a cam 7 5 secured on shaft 22,` whereby when said cani rotates in the direction of the arrow, (Fig. l), the rod 66 will be reciprocated to push the pins through guideway 3.9.to drilling position. When rod 66 is retracted it is withdrawn sufficiently from guideway 39 to enable the lowermost pin in the hopper to enter the guideway, and when said rod is projected forwardly for feeding a pin it will enter said guideway and retain the pins in the hopper above, and so on successively.

The operation of the parts is such that when rod 66 advances toward the drilling position it will push the rlowermost pin from the hopper through the guideway 56, which pin will encounter one or both of the blocks 53 `and bythe sliding ofthe pin along the inclinedsurfaces 53a the pin will be rotated as necessary to present a flat surface indrilling position under. -thedrilh rllhe drill will now descendto drillvthe hole ata through the fiat surfaces of the pin on opposite sides theieof,y 2). ,illhile the drilling is being performed in one pin the rod v66 will retreat to permit another-pin to enter the guideway 39, whereupon the drillwill rise, vand whenlthe. drill has been released. from the pin the slide 51 will move to the left in Figs. 3 and 5 to permit the drilled pin to drop. whereupon .said slide will return t0 the drilling position and rod 66 will feed .another pin to drillingposition, and.l so on successively. By the means described it is Vmerely necessary to supply,y the hopperwith pins with their iattened surfaces in thevv di rection yof the drill, and the pins will be suc* cessively,` automatically fed and drilled and deposited accurately andexpeditiously.

While I have illustrated and-described a practical embodiment. of my invention it will be understood. that changes may be made in the details of construction set forth Without departing from the scope of the appended claims.

Having now described my invention what I claim'is:

l. A drilling machine of the character specified comprising means to rotate and reciprocate a drill, supply means for pins having exterior flat surfaces to retain pins in any rotary position` means to feed the pins in the direction of their longitudinal axes te `drilling position, and means to rrotate the pins axially to present their flat surfaces in drilling' posit-ion during feeding of the pins.

Q. A drilling machine ofl the character specified comprising means to rotate and reciprocate a drill, supply means for pins having flat surfaces, means to feed the pins to drilling position, and means to cause the pins to present their flat surfaces in drilling position comprising one or more movable blocks having' an inclined surface to en. counter the flat surfaces of the pins to rotate them into drilling position.

3. A drilling machine of the character specified comprising means to rotate and reciprocate a drill, supply means for pins having exterior flat surfaces to retain pins 1n any rotary position, a guideway for the pins provided vvith resilient means to encounter the dat surfaces of the pins to rotate the latter axially to present such surfaces in drilling position during feeding of the pins in the guideway, and means to feed the pins successively through the guidevvay with respect to the second named means.

4. A drilling machine of the character specified comprising means to rotate and reciprocate a drill, supply means for pins having flat surfaces, a guideway for the pins,

a movable block operative with relation to the guideway and provided with an inclined portion to encounter flat surfaces of the pins to rotate the latter to drilling position, and means to feed the pins successively through the guidevvay and with respect to said block.

5. A drilling machine of the character specified comprising means to rotate and reciprocate a drill, supply means for pins having flat surfaces, a movable member operative relatively to the drilling means, a block provided with an inclined portion to cooperate with surfaces of the pins to rotate the latter into drilling position, means upon said member for guiding said block, means to `successively feed the pins through said guidevvay with respect to said block, and means to actuate said movable member.

6. A drilling machine of the character specified comprising means to rotate and reciprocate a drill, supply means for pins having flat surfaces, a movable member operative with relation to the drilling means, said member having a bar provided with a recess, a block operative in said recess and provided with an inclined portion to cooperate with flat surfaces of the pins to rotate them into drilling position, means re siliently pressingthe block into pin-engaging position, said member having a portion toy support and release the pins, and means to feed the pins successively past the block into 'drilling position.

7. A machine as set forth in claim 6, in vwhich the block is provided with a pin and said member is provided with a slot receiving the pin for retaining the block in operative position respecting said member.

PETER MEYER. 

